Amplifier



JSEPH A. BL-AXDER, 0F

PHLADELEH., PENNSYLVANIA i Application led May 3.

Re it known limi. l'. JosnrH Rayman. riiizen of tho llniioi'l @talenresiding at Pliilziclolpliin. in ille roomy of Philadelphia. 5Dennsylmnia, have ini'enind a. new

i and nseful Amplifier, of which the following 1s a spociiontion.

This; ini'onion relues lo zunpliirrs for Sound rnproilucors. and il haamore puricnlnr reference lo that type of artiolo now commonly known asn. loud Speulfei. the rin'1ur object boing no provi'flo a (lorica ofilu? Clmrncl'or Stuiozl of oxcepfionul uw pzufiy.

no'tlior object is (l 1 nuinnunt or' lieb lor tonal roinorluction. withinciflrni' eliminuion of local intel-formes fluo lo lw pr@- Ynilingrilnni'orv inliuenoes u @rlociatwl niin unipliivrs :xs al: presentconstrucleil.

further objioci' is lo Qlonly Clarify r0- prorlurl'ion of the onaleffects nnfl Sounflri quilt-oil through my novel 'form of :implilior. byinsulfninT lilo wwe-during ins/frun'ionnlir Compleely from all si'nulino;

25 inoinllic or other Suliszinoos ion y' lo mur uml interiore 'withnciurni'e ropro fluction.

lilliili the foregoing. and other ')lsjicc'u in View. :1S Will heapparent from 'ne following descripi; in of practical emboclinlons of nlv invonl'iion. ltliefvsmne muy lio ccinriiljf li`iinoil is ('onsistinffof nu amplifying horn onzlioflying' :1 cellular Woll and an insulatematerial base adapted to complets-'5y nous@ 3a *Sie reproducingingfrumennlit?.

ln the further disclosure of liif# inveniion ro'orenro will lio liarl.lo tlm novumpnnyiug Sin-els oii orzplnnuorl'v (konings, @heroincorresponding paris aro do 'unimi 40 ,by lila@ indire?, in all lili@views,

ligure l is a Sorlional elevaion of on amplifier or loud SpeakerConvoniiounlly lioflving on@ form of my inveniion.

Figure 2 is :i fleiuil Secfional View olE an oifunonl; roi'uprisfffitherein Figure is n similar secionui flots-iii of an opposedciw-operating element.

Figur@ 'is a sectional elevation of u slighily modified form of my'invention 09 nml.

Fimn-e 5 is a Sootional plan 'alzn approxinaoly on a plane us inclicneclby lie arrowed line 5 5 shown on "lle procoing figure.

Referring more partioulnrly o the drawings it will ne obs'orve-: th-heamplifying w24. Serial no. Human.

liorn`per .qw-compris@ two main peu-ls onun'elieinsirol;7 ilcsigjnnoclby the nuinorals: (i. '7. ilu? 'Former of which is: olf Sandnrdgoor-onori; oonignl'ntiou uliilo tlm luik-ir un oul'nurillr (lh-ergingfiar@ embodying oom-oni'ic Fpuoofl walls 9. affording n #uw rounding`annular air or vacuum 'space il). 'llxo outor Wall Portion S is inwardlybonded at. ll. to ufi'ori'l :i sont for ille outwardly flanged 0nd l2 ofthe inner sorlion 9, will; ini'mposiion of u. rosiliont dswitiongfuflzot 1?. u'liorony un air fighi joint is estalulisliml. Similarlythe inner ond of' the ou'or Secion Q is slioulflorofl :nul rofluoefl toprovide u sont l-l for rl'io inner onfl of iii@ innor Sem tion 9. with:in inervoning' @Shaped gasket l5. 'o ulforil yu right lioini tlioreif.The larod sooi'ion or pnrt 7. iS made of thin shoot material. nml il iSlnptefl Vfor coupling connection. lo tlio g'i'ooil'o-neck 6. by anyQonvonient forni ol nimxhiug menno. Such nfs tluimli-screws 1?.vlnciflentnlly. if is i0 bil, purticnlarl;v nolofl. that nlhough l haveshown nnrl flesorilwi the flaring section 7 onli.'` of collulzuformation to provide lha nir or rznuum Space l0. it is to be clearlyunderstood liui the goose-neck portion 6 inn-jv lio similarlyvconstruclefl.

To :llord Support for 'the simplifier constructed as above Set forth.nnilo use of n glans. porcelain. or oiiier approprizrfo in- Sulnematerial ousnr 17. having' n conomnrio neck 18. in which lle lower @nflof ihn mosenecl 6 is afinporl lo seal thereon n v orner. collar 1Q. Thereproducing instrumento/lilly or intrnuiontaliins Q0. is. or um.surrounded by. and son@ wibhin. vork or o'. er Sniable niaerinl Pups 2.tofl uitli in complemeuai cells proriderl for their rncepion in n glass.porcelain or @thor appr@ priae insnln'lo iniziai-inl open top lbox QQThis open iop im); is* closzofl in iw n I vrezulur oon'iposilo oovorincluding au inno 23. and an outer -rap 'piece Sill, the l mg' proiuflod1" upper part urti@ a lrfcorzil flange 25. ufiapu shoulrler 2G pro neck18 aoresjl The opposonY or inenting" focos of elle tuo paris Q3. 24.compriniilie coninosiie cmm For tine open i'op 'box are ashiouel wiropposed recessions that. when Sol ai assembled constitute spiral filletsleading upwardly from nach reprofncing instrumentality 2:3 "my an @permi 23 in ig.

solo.: on a Complemenn fieri. lor ilionurpo frictionnlly lit und meansof an infegral. or'

Elf;

inner section. 9.3, and both merging into the. common outlet 29,concentric with the `abutting end of the goose-'neck 6. ln thedraufings, the reproducing instrumentalities 20, 2O conventionallyrepresent ordinary earphones of standard pattern, as I have found thatthey give excellent results, although it will be obvious anyother'suitable device may be employed. 'lt is also to be observed thatthe open-top box 2l, composite cover, and insulate base i7, are rigidlyclamped together-in separable relation-by a bayonet or other lock means,conventionally shown at SO; suoli manner of locking the respective partstogether being readilvcomprehended by those conversant with the art,

` by an examination of and needing no Jfurther explanation. lt is,however, desired to particularly emphasize the novel construction ofamplifier supporting base 17 with the associated parts 23, 24, affordingspiral outlets for' the sounds reproduced bv the instrumentality orinstrumentalities Q0. which are cdectively insulated vfrom localinterference by the opentop box 22. f

Referring now to Figures Ll and 5, all such parts as generally conformwith the preceding description are designated by the same.

"distinguishing characters, and the following outline will, accordingly,be limited to the salient featu-"es of novelty. ln the first place it.will be noticeablethat the open-top box 2L), is closed-in by a singlepiece cover 3l having a series of radial projections 32, adapted forpassage through complementally. configured notches 33, and by e partialturn to erl'ect locking connection with the intervening segmentalshoulders 34, provided for the purpose in the neck 18, of the base 17.lncongection with thisform of my invention, l employ a dished perforatedistributor Having a screw-threaded wall or the goose-neck G, an rigidclamping by loch nuts SZ rl`his distributor 35, ittvill be seen., isperlmetrically tessellated, each tessellation 38 having the inner end ofa Wire or string 39, attached thereto, and the outer or free end of eachsaid Wire is coupled to an adjusting; key 40 afforded bearing in thedare bead il,V as will be readily understood the drawings.

will, o course, be understood that the adjusting lteys 40 afford meanswhereby alli the respective Wires or strings 40 may be attnued to thesame pitch, and that said stri'n s or Wires function to distribute theds reproduced evenly around the ampliiier flare 7.

'Obviously, detail changesv in the several parts may be readily electedwithout departing from the spirit of `my invention,

gement in the avec therefore the right is hereby reserved to make allsuch reasonable modiicaitons therein as fairly lie Withinthe scope ofthe appended claims.

y Having described my claim is l. An amplifier embodying a cellularWalled horn and an insulate material base, said base affordingattachment Jfor a reproducing instrumentality enclosure, cover for theenclosure having a spiralized passage communicating with the aforesaidhorn.

2. An amplifier embodying a goose-neel; and att-ached ilare, the latterincluding concentric-spaced members affording an annular interspace,packing means ensuring an air tight joint between the spaced members, aninsulate material vbase for the' goosenck, and a reprdoucinginstrumentality insulating casing removably connected into the base. 'i

3. An amplifier and attached dare,

invention what l embodying a goose-neck the latter including conand a`'centric spaced members affording an annuy lar interspace, packing meansensuring an air tight joint between the spaced members, an insulatematerial base for the gooseneck,

mentality---rmovablyV attached intol the base and having a compositecover adording spiralized conduits between said instrumentality and thegoose-neck. Y

4. In combination, an. amplifier having a cellular wall, andan insulatematerial base removably attached thereto, said base ina like materialreproducing instrucluding a reproducing instrumentality en. l

closure having a cover adording spiralized sound conduction oricesintermediate the reproducer and ampliier.

5. The combination with an amplifier of 'a base affording attachmentfora reproducin instrumentality enclosure, having a splralized soundconducting passage communicating with the amplifier.

f3. The combination with an amplifier of a. base affording attachmentfor a reproducing instrumentality enclosure, and a cover for theenclosureliaving a spirslized sound conduction passage communicatinginto the amplifier. Y l

'i'. In combination an amplifier, an insulate material base Vt er'or, areproducing instrumentality enclosure removably attached within saidbase and having Aa sp1- ralized sound conduction oriicefconnecting lintothe amplifier, and strings disposed around the inner"surface of theamplier with capacity for adjustment.

ln testimonywhereot i ailx my signature the 25th dey o April, w24. 7JOSEP @WER

